ElectrostaticsHard
Question
A simple pendulum has a length l & mass of bob m. The bob is given a charge q coulomb. The pendulum is suspended in a uniform horizontal electric field of strength E as shown in figure, then calculate the time period of oscillation when the bob is slightly displaced from its mean position.
Options
A.
B.
C.
D.
Solution
Time period of simple pendulum is given as
T =
; where = geff = 
= 
∴ T =
T =
; where = geff = = ∴ T =
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